Nomura DS-Series

The Nomura DS-Series is a line of ultra-precision CNC Swiss-type automatic lathes with 20mm bar capacity, engineered by Nomura DS with an emphasis on dimensional accuracy and surface finish quality that meets the requirements of the most demanding miniature precision parts markets. Nomura DS, a Japanese manufacturer with deep roots in precision Swiss-type technology, occupies a specialized position in the Swiss-type market — emphasizing machine rigidity, thermal stability, and precision guide bushing performance over raw axis count, targeting manufacturers where part dimensional consistency and surface finish quality are the primary selection criteria.

The DS-Series design philosophy centers on ultra-precision machining: where many Swiss-type platforms compete on axis count and driven tool positions, Nomura DS focuses on the mechanical accuracy of each axis — guide bushing concentricity, headstock thermal management, spindle runout, and slide straightness. For parts in the medical micro-device, watchmaking, and precision instrument sectors where dimensional tolerances are measured in single-digit micrometers and surface finish requirements approach ground-component quality, these fundamental machine accuracy parameters are the differentiating factors. A machine that holds tighter tolerances per cycle is worth more per hour than one with more axes that drifts thermally during the production shift.

The DS-Series includes multiple models within the 20mm class, offering variations in driven tool count, axis configuration, and back spindle inclusion. The guide bushing on the DS-Series is engineered to minimize clearance while maintaining bar feed reliability — a precision balance that is central to Swiss-type performance and one where Nomura DS applies significant engineering attention. The result is guide bushing performance optimized for micron-level runout across extended production runs, enabling surface finish values and roundness measurements that comparable Swiss-type machines may not consistently achieve.

For manufacturers of watchmaking components, miniature medical devices, precision scientific instruments, and optical components where the cost of non-conforming parts is very high and the tolerance requirements exceed what standard Swiss-type platforms can consistently deliver, the Nomura DS-Series represents the premium ultra-precision option within the 20mm Swiss-type class. The Japanese precision engineering heritage and focus on fundamental machine accuracy rather than feature count makes the DS-Series the choice when the tolerance requirement, not the feature complexity, drives the machine selection.